{"id":"vidhyamitra:city-day:perth:2161-08-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2161-08-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2161-08-31","date_display":"August 31, 2161 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2161,"month":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2510591.770833,"kali_year":5263,"ahargana":1922126.2708,"sun":{"sidereal_longitude":130.8415,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":256.4617,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.6202,"elapsed_within_tithi_degrees":5.6202},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":256.4617,"elapsed_within_degrees":3.1284},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.3032},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":2161,"month":8,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2510591.770833,"ahargana":1922126.2708,"kali_year":5263,"ayanamsa_lahiri":26.1113,"grahas":{"sun":{"sidereal_longitude":131.90949,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":259.16589,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false,"latitude":2.8885},"mars":{"sidereal_longitude":317.83159,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":145.92638999999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":219.17598999999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":107.59848999999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":199.44519000000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":216.5003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":36.5003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2161,"month":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2510591.770833,"kali_year":5263,"ahargana":1922126.2708,"sun":{"sidereal_longitude":130.8415,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":256.4617,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.6202,"elapsed_within_tithi_degrees":5.6202},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1,"moon_longitude":256.4617,"elapsed_within_degrees":3.1284},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":27.3032},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.888,"elongation":125.62},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.888,"opposition_distance":54.38}},"eclipse_window_40days":[]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"06:34","sunsetLocal":"17:59","solarNoonLocal":"12:16","dayLengthHours":11.4145657713603,"dayLengthDisplay":"11 Hours 24 Mins 52 Secs","nightLengthDisplay":"12 Hours 35 Mins 08 Secs","moonriseLocal":"13:42","moonsetLocal":"03:49","rahuKala":{"name":"Rāhu Kāla","start":"08:00","end":"09:25","startHours":7.9930780103501,"endHours":9.419898731770138,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:51","end":"12:16","startHours":10.846719453190175,"endHours":12.273540174610211,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:42","end":"15:08","startHours":13.70036089603025,"endHours":15.127181617450287,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:14","end":"09:37","startHours":9.229655968914132,"endHours":9.610141494626141,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:03","end":"07:21","startHours":7.041864196070075,"endHours":7.346252616639683,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:39","startHours":11.893054648898202,"endHours":12.65402570032222,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:03","end":"05:48","startHours":5.044315186082022,"endHours":5.805286237506042,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:37","end":"06:34","startHours":5.6150434746500375,"endHours":6.566257288930062,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"14:56","startHours":14.175967803170263,"endHours":14.936938854594283,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.780823060290363,"endHours":18.18082306029036,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:27","startHours":17.980823060290362,"endHours":18.456429967430374,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.730823060290362,"endHours":19.480823060290362,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:39","startHours":23.8930546488982,"endHours":24.654025700322222,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:34","end":"08:00","startHours":6.566257288930062,"endHours":7.9930780103501,"quality":"auspicious"},{"name":"Kāla","start":"08:00","end":"09:25","startHours":7.9930780103501,"endHours":9.419898731770138,"quality":"inauspicious"},{"name":"Śubha","start":"09:25","end":"10:51","startHours":9.419898731770138,"endHours":10.846719453190175,"quality":"auspicious"},{"name":"Roga","start":"10:51","end":"12:16","startHours":10.846719453190175,"endHours":12.273540174610211,"quality":"inauspicious"},{"name":"Udveg","start":"12:16","end":"13:42","startHours":12.273540174610211,"endHours":13.70036089603025,"quality":"inauspicious"},{"name":"Chala","start":"13:42","end":"15:08","startHours":13.70036089603025,"endHours":15.127181617450287,"quality":"neutral"},{"name":"Labha","start":"15:08","end":"16:33","startHours":15.127181617450287,"endHours":16.554002338870326,"quality":"auspicious"},{"name":"Amṛta","start":"16:33","end":"17:59","startHours":16.554002338870326,"endHours":17.980823060290362,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:59","end":"19:33","startHours":17.980823060290362,"endHours":19.554002338870326,"quality":"neutral"},{"name":"Labha","start":"19:33","end":"21:08","startHours":19.554002338870326,"endHours":21.127181617450287,"quality":"auspicious"},{"name":"Amṛta","start":"21:08","end":"22:42","startHours":21.127181617450287,"endHours":22.70036089603025,"quality":"auspicious"},{"name":"Kāla","start":"22:42","end":"00:16","startHours":22.70036089603025,"endHours":24.27354017461021,"quality":"inauspicious"},{"name":"Śubha","start":"00:16","end":"01:51","startHours":24.27354017461021,"endHours":25.846719453190175,"quality":"auspicious"},{"name":"Roga","start":"01:51","end":"03:25","startHours":25.846719453190175,"endHours":27.41989873177014,"quality":"inauspicious"},{"name":"Udveg","start":"03:25","end":"05:00","startHours":27.41989873177014,"endHours":28.9930780103501,"quality":"inauspicious"},{"name":"Chala","start":"05:00","end":"06:34","startHours":28.9930780103501,"endHours":30.56625728893006,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:34","end":"07:34","startHours":6.566257288930062,"endHours":7.566257288930062,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:34","end":"08:34","startHours":7.566257288930062,"endHours":8.566257288930062,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:34","end":"09:34","startHours":8.566257288930062,"endHours":9.566257288930062,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:34","end":"10:34","startHours":9.566257288930062,"endHours":10.566257288930062,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:34","end":"11:34","startHours":10.566257288930062,"endHours":11.566257288930062,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:34","end":"12:34","startHours":11.566257288930062,"endHours":12.566257288930062,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:34","end":"13:34","startHours":12.566257288930062,"endHours":13.566257288930062,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:34","end":"14:34","startHours":13.566257288930062,"endHours":14.566257288930062,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:34","end":"15:34","startHours":14.566257288930062,"endHours":15.566257288930062,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:34","end":"16:34","startHours":15.566257288930062,"endHours":16.56625728893006,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:34","end":"17:34","startHours":16.56625728893006,"endHours":17.56625728893006,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:34","end":"18:34","startHours":17.56625728893006,"endHours":18.56625728893006,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:34","end":"19:34","startHours":18.56625728893006,"endHours":19.56625728893006,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:34","end":"20:34","startHours":19.56625728893006,"endHours":20.56625728893006,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:34","end":"21:34","startHours":20.56625728893006,"endHours":21.56625728893006,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:34","end":"22:34","startHours":21.56625728893006,"endHours":22.56625728893006,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:34","end":"23:34","startHours":22.56625728893006,"endHours":23.56625728893006,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:34","end":"00:34","startHours":23.56625728893006,"endHours":24.56625728893006,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:34","end":"01:34","startHours":24.56625728893006,"endHours":25.56625728893006,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:34","end":"02:34","startHours":25.56625728893006,"endHours":26.56625728893006,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:34","end":"03:34","startHours":26.56625728893006,"endHours":27.56625728893006,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:34","end":"04:34","startHours":27.56625728893006,"endHours":28.56625728893006,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:34","end":"05:34","startHours":28.56625728893006,"endHours":29.56625728893006,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:34","end":"06:34","startHours":29.56625728893006,"endHours":30.56625728893006,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":8.560831898911324,"eotMinutes":0.14558952338733633,"ayanamsa":26.1113}},"calendars":{"vikram_samvat":2218,"vikram_samvatsara":"Bhāva","saka_samvat":2083,"saka_samvatsara":"Durmati","bengali_samvat":1568,"malayalam_era":1337,"nanakshahi_year":692,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada (Adhika) Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":true,"lunar_month_purnimanta_is_adhika":true,"lunar_month_amanta_is_adhika":true,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada (Adhika) Śukla Ekādaśī · Vikram 2218 Bhāva · Śaka 2083 Durmati"},"festivals":[{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 31, 2161 CE · Perth, Australia · Vidhyamitra","description":"August 31, 2161 CE for Perth, Australia: Śukla Ekādaśī, sūryodaya 06:34, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2161-08-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2161-08-31","sa":"https://sa.vidhyamitra.com/city/perth/2161-08-31","hi":"https://hi.vidhyamitra.com/city/perth/2161-08-31","x-default":"https://vidhyamitra.com/city/perth/2161-08-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T06:24:04.915Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-06-01T06:24:04.915Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T06:24:04.915Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}